DataWareHouse

11.What is junk dimension? • In scenarios where certain data may not be appropriate to store in the schema, this data (or attributes) can be stored in a junk dimension. The nature of data of junk dimension is usually Boolean…

1.What is the purpose of cluster analysis in Data Warehousing? Cluster analysis is used to define the object without giving the class label. It analyzes all the data that is present in the data warehouse and compare the cluster with…